James -- Thanks for pointing that out. I am (almost) a complete Google Ignoramous, so am very happy to hear that my perception of reality is a bit skewed and we can keep using the Google Thing we've been using before. But I note your use of the word "app", implying that there is a smartphone app I could run to join the conversation on Tuesday. (I am afraid there is a good chance I will not be at a computer.) I have to admit, that thought had not occured to me. I just tried to find it ... is it "Hangouts Meet by Google"? I suppose I could try https://hangouts.google.com on Safari on my phone, but that sounds a bit odd.
When you say "In the past we've met in Google Hangouts, but I understand some folks want to move on to a technology that is not being actively dismantled. Suggestions welcome."
This seems to misrepresent the situation. Although literally true it is because Hangouts has already been replaced with Google Hangouts Meet and Google Hangouts Chat. Two separate apps. The former (Hangouts Meet) is what we've been using for ages so there is no need for us to change any thing as far as I'm aware.
Just seeking to clarify.